Low-noise regulating valve

Abstract

The invention provides a low-noise regulating valve comprising a valve body, a combined sleeve, a sleeve core, a valve core and a valve stem. The valve core is connected with the valve stem. The valve core can move up and down along the inner walls of the sleeve core and the combined sleeve. The low-noise regulating valve is characterized in that a valve seat is provided with the combined sleeve provided with a plurality of tapered holes, the inner wall of the combined sleeve fits the valve core, the upper end of the combined sleeve is fixed to through the sleeve core, and the lower end of the combined sleeve to the valve seat; the combined sleeve is composed of an elastic damping lower end cover, a lower slot, an outer sleeve, a middle sleeve, an inner sleeve, an upper slot and an elastic damping upper end cover; the elastic damping upper end cover and the elastic damping lower end cover are mounted in the upper and lower slots, respectively; the inner sleeve, the middle sleeve and the outer sleeve are mounted in the upper and lower slots sequentially from inside to outside; the inner sleeve, the middle sleeve and the outer sleeve are all provided with a plurality of tapered holes having a taper 1:10 to 1:1. A sound source of the combined sleeve is subjected to hexaploid noise reduction, a sound path of the upper and lower elastic damping end covers is subjected to noise reduction, and noise treatment is achieved for multiple parts of the regulating valve. The low-noise regulating valve is simple in structure, easy to change and convenient to use.

Description

technical field [0001] The invention relates to a low-noise regulating valve, in particular to a regulating valve capable of controlling noise by installing a combined sleeve with three multi-tapered sleeves, two sleeve slots and two elastic damping end caps The invention belongs to the technical field of control valve noise control. Background technique [0002] As a very important part of the automatic control system, the regulating valve is widely used in many important industries such as chemical industry and petroleum. The working principle of the regulating valve is to change the regulating parameters through the control signal sent by the regulator, and control the adjusted parameters within the range required by the process, so as to realize the automation of the production process. However, due to the complexity of the internal flow field of the control valve, the control valve produces noise during operation, which not only pollutes the surrounding environment, bu...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at problems such as excessive noise, high cost of noise control, and poor consideration of its own structure and flow field characteristics in the noise control of existing control valves, and provides a control valve that can effectively control the noise of the control valve and is low in cost and conforms to A Low Noise Control Valve Based on Flow Field Characteristics

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